The Yi Zhang research group paper, “Liquid-based encapsulation for implantable bioelectronics across broad pH environments”, was published in Nature Communications, in January, 2025.
Wearable and implantable bioelectronics that interface with various biological tissues and environments have a wide range of applications, including pain management, electrophysiological mapping and stimulation of cardiac tissue, and gastrointestinal monitoring and modulation. These biological tissues and environments span a broad pH range, from the highly acidic conditions in the gastrointestinal system (as low as pH 1.5) to the alkaline environment of chronic wounds (up to pH 8.9). The encapsulation of these systems, however, presents a major challenge, as such devices require superior barrier performance against water and ion penetration in challenging pH environments while also maintaining flexibility and stretchability to match the physical properties of the surrounding tissue. Current encapsulation materials are often limited to near-neutral pH conditions, restricting their application range. Here, Yi Zhang lab from the Institute of Materials Science and Biomedical Engineering Department reports a liquid-based encapsulation approach that achieves year-long encapsulation performance for wireless optoelectronics under highly acidic conditions (pH 1.5–4.5). This approach also achieves high optical transparency, stretchability, and mechanical durability. This liquid-based encapsulation strategy is broadly applicable to a range of implantable bioelectronics, particularly in challenging acidic or alkaline conditions.
Congratulations to first co-authors, Xiaoting Xue and Xincheng Zhang, of the Zhang Research Group.
Professors Greg A. Sotzing and Pritish S. Aklujkar have been working with high temperature dielectrics used in high energy density capacitors. They are developing a new generation of all-organic polymer dielectric capacitors that can withstand high temperature conditions, eliminating the need for coolant systems. These capacitors will have a number of applications, including electric-vehicle charging stations and Electromagnetic Aircraft Launch Systems (EMALS) used to catapult jets from aircraft carriers. Their paper, “Chromogenic Identification of Breakdown” was published in Nature Materials, February, 2, 2024. Visit 
Polymer Ph.D. student, Abhirup Dutta, received an internship with Henkel Corporation during the summer of 2021. He worked in product development R&D with their adhesives team performing synthesis, formulation, and application testing of novel isocyanate free polyurethane based reactive hot-melt adhesives for engineered wood applications.
Dr. Ying Li is using computers and artificial intelligence to improve delivery of nanomedicines to tumors. “A lot of medicines involve intravenous injections of drug carriers,” said Ying Li, an assistant professor of Mechanical Engineering at the University of Connecticut. “We want them to be able to circulate and find the right place at the right time and to release the right amount of drugs to safely protect us. If you make mistakes, there can be terrible size-effects.”